Myron g



(No Model.)

G. STOLP.

,GABPET SWEEPEm No. 252,402. a Patented Jan. 17,1882,

UNITED STATES PATENT OFFICE.

MYRON G. STOLP, OF AURORA, ILLINOIS, ASSIGNOR TO THE AURORA MANUFACTURING COMPANY, OF SAME PLACE.

CARPET-SWE-EPER.

SPECIFICATION forming part of Letters Patent No. 252,402, dated January 17,1882.

Application filed December 1, 1881. (No model.)

To all whom it may concern:

Be it known that I, MYRON G. SroLP, residing at Aurora, in the county of Kane and State of Illinois, and a citizen of the United 5 States, have invented a new and useful Improvement in Carpet-Sweepers, of which the following is a full description, reference being bad to the accompanyingdrawings, in which- Figure 1 is a top view, a portion of the case being cut away, some parts being shown in section. Fig. 2 is an end elevation. Fig.3is a section taken at line wof Fig. 1, the drivingwheels being removed.

My invention relates to that class of carpetsweepers in which the wheels which support the sweeper at one end also serve the purpose of drix'ing the brush-shaft, to which motion is given by the frictional contact of such wheels, without the aid of springs or levers to force the wheels into contact with the shaft.

The object of my invention is to render the action of the brush-drivin g wheels more efficient and certain than h as heretofore been done,

which I accomplish by arranging the arms tween the partition 0 and the end piece, D. F I

are swinging arms, the lower end of each of which is provided with a pin, a, upon which pins the wheels E are placed. The upper and outer ends of these arms F are pivoted to the inside of the end piece, I). b are pins which serve the purpose of stops to limit the movement of the lower ends of the swinging arms F. These arms are so located that the pins 0!, which carry the wheels E, will be at all times below the horizontal plane in which the center of the brush-shaft is located, and so that the peripheries of the wheels E will come in contact with the brush-shaft, the upper and outer end of each swinging arm F being in a 3 plane somewhat above the horizontal planein force the wheels E in an upward direction- In consequence of the described arrangement of the wheels E and swinging arms F, which carry them, the pressure of the wheels upon the brush-shaft will be very great in proportion to the power exertedmuch greater than if the swinging arms F were pivoted at a point below, the brush-shaft; and this result follows because, by the described arrangement, I have introduced into the carpet-sweeper the principle of the togglejoint, the arm F being in effect one arm of a toggle-joint and that part of the wheel which extends from its center to the brush-shaft being in effect the other arm of such a joint. I

By the described construction and arrangement of the wheels and swinging arms I render the action of the wheels E more certain and efficient than has heretofore been done, and produce a sweeper in which a small force exerted upon the driving-wheels will be sufficient to bring them into frictional contact with the brush-shaft with sufficient force to secure the rotation thereof.

I do not limit myself to pivoting the outer ends of the arms F in the exact position shown in thedrawings, it only being necessary that the pivotal'point should be so located that the angle which the arm makes with a line drawn from the center of the wheel to the center of the brush-shalt shall be a very obtuse angle, having its apex so located that press are upon the wheel will force it against the brush-shaft, the operation being similar to that of a toggle-joint.

I am aware that carpet-sweepers have been constructed provided with supporting-wheels, which also operate as driving-wheels to give motion to the brush-shaft, unaided by springs or levers, and I do, not claim, broadly, such construction.

What I claim as new, and desire to secure by Letters Patent, is as follows:

In a carpet-sweeper,'i11 combination with the I'HllSll-Shflft, a friction-Wheel, E, pivoted 5 on a, swinging arm, F, with the center of the wheel below the horizontal plane in which the stantially s and for the purpose specified.

MYRON G. STOLP. Witnesses:

GEORGE MEREDITH, F. H. THATCHER. 

